mail.trafficplanethosting.com has no CNAME records.
Question and response
Question
dig mail.trafficplanethosting.com. NS
Answer
The response has no answer records.
Authority
trafficplanethosting.com. 1016 SOA ns1.trafficplanethosting.com. root.v1.trafficplanethosting.com. 2026011200 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0